Endophytic bacteria from the leaves of two types of albino tea plants, indicating the plant growth promoting properties

2021 ◽  
Author(s):  
Huiyan Jia ◽  
Zuguo Xi ◽  
Jinqing Ma ◽  
Yifan Li ◽  
Changhong Hao ◽  
...  
Keyword(s):  
Plant Growth ◽  
Endophytic Bacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Tea Plants

The Mexican giant maize of Jala landrace harbour plant-growth-promoting rhizospheric and endophytic bacteria

3 Biotech ◽  
2021 ◽  
Vol 11 (10) ◽  
Author(s):  
Bibiana Rios-Galicia ◽  
Catalina Villagómez-Garfias ◽  
Esaú De la Vega-Camarillo ◽  
Jairo Eder Guerra-Camacho ◽  
Nora Medina-Jaritz ◽  
...  
Keyword(s):  
Plant Growth ◽  
Endophytic Bacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting

Assessing the Plant Growth-promoting Traits and Host Specificity of Endophytic Bacteria of Pulse Crops

2021 ◽  
Author(s):  
R. Thamizh Vendan ◽  
D. Balachandar
Keyword(s):  
Plant Growth ◽  
Endophytic Bacteria ◽  
Gene Sequencing ◽  
16S Rrna Gene Sequencing ◽  
Growth And Yield ◽  
Rrna Gene ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Rrna Gene Sequencing ◽  
Plant Growth Promoting Traits

Background: Symbiotic associations between legumes and Rhizobia are ancient and fundamental. However, the plant growth-promoting endophytes other than Rhizobia are not yet fully explored for pulses productivity. The present study was aimed to isolate efficient endophytic bacteria from pulses, assess their diversity, screen their plant growth-promoting activities and to test their potential as bio inoculants for pulses.Methods: We have isolated several endophytic bacteria from pulse crops more specifically from blackgram (Vigna mungo) and greengram (Vigna radiata). After careful screening, 15 promising endophytic isolates were selected for this study. The identification of endophytic bacterial isolates was performed by 16S rRNA gene sequencing. The isolates were tested for their potential for the plant growth-promoting traits such as nitrogen fixation, phosphate solubilization, indole-3-acetic acid production, siderophore secretion and antifungal activity. Pot culture experiments were conducted with the screened potential endophytic cultures.Result: The 16S rRNA gene sequencing revealed that species of Enterobacter, Bacillus, Pantoea, Pseudomonas, Acromobacter, Ocrobacterium were found as endophytes in blackgram and greengram. The in vitro screening identified Bacillus pumilus (BG-E6), Pseudomonas fluorescens (BG-E5) and Bacillus licheniformis (BG-E3) from blackgram and Pseudomonas chlororaphis (GG-E2) and Bacillus thuringiensis (GG-E7) from greengram as potential plant growth-promoting endophytes. These strains showed antagonism against plant pathogenic fungi. Upon inoculation of these endophytic PGPR strains, the blackgram and greengram growth and yield got increased. Among the strains, BG-E6 recorded 14.7% increased yield in blackgram and GG-E2 accounted for a 19.5% yield increase in greengram compared to respective uninoculated control. The experimental results showed that there was a host specificity found among the endophytic bacterial cultures with pulses. The cross inoculation of endophytic strains did not perform well to enhance the growth and yield of their alternate hosts. 

Isolasi dan Karakterisasi Bakteri Endofit Pelarut Fosfat dan Penghasil Hidrogen Cyanide (HCN) dari Tanaman Bawang Merah (Allium cepa L).

2018 ◽  
Vol 20 (1) ◽  
pp. 9
Author(s):  
Ryan Hilda Wandita ◽  
Sri Pujiyanto ◽  
Agung Suprihadi ◽  
Ratih Dewi Hastuti
Keyword(s):  
Plant Growth ◽  
Traditional Medicine ◽  
Allium Cepa ◽  
Endophytic Bacteria ◽  
Economic Value ◽  
Average Diameter ◽  
Plant Growth Promoting Bacteria ◽  
Allium Cepa L ◽  
Plant Growth Promoting ◽  
Growth Promoting

Onions (Allium cepa L.) is one of the leading horticultural commodities in Indonesia and is often used as seasoning and traditional medicine. Onion has a high economic value and fluctuating prices so that domestic onion production needs to be improved, one of them with a presence of endophytic bacteria that act as plant growth promoting agent or Plant Growth Promoting Bacteria (PGPB). Endophytic bacteria isolated from the root, leaves, and bulbs. In this research has been tested endophytic bacteria of onion plants from Garut regency which has PGPB factors such as able to dissolve phosphate, and produce HCN. The results obtained 251 isolates of endophytic bacteria. Based on the characterization results, the superior isolates capable of dissolving phosphate with an average diameter of 0.45 cm is isolate II.B.1D.3, and 11 isolates capable of producing high HCN. These isolates can be used as PGPB agents so that they can be useful in increasing plant growth and onion production and biocontrol in suppressing pathogens. Keywords: PGPB, endophyte, onion, phosphate, HCN

scholarly journals Biocontrol potential; antifungal activity and plant growth promoting activities of endophytic bacteria from Raphanus sativus

2021 ◽  
Vol 12 (2) ◽  
pp. 1143-1150
Author(s):  
Lavanya J ◽  
Chanthosh S ◽  
Reshma Shrii ◽  
Viknesh V ◽  
Deepika S ◽  
...  
Keyword(s):  
16S Rrna ◽  
Plant Growth ◽  
Raphanus Sativus ◽  
Endophytic Bacteria ◽  
Effective Strain ◽  
Pathogenic Fungi ◽  
Plant Diseases ◽  
Plant Pathogenic Fungi ◽  
Plant Growth Promoting ◽  
Growth Promoting

The study was aimed to find an alternate approach for chemicals used in agriculture to avoid microbial infections. Fungal pathogens cause different types of plant diseases and affect a majority of edible crops by destroying the tissues of the plant in a direct or indirect mechanism. So, an alternative approach led to the development of biocontrol agents using endophytic  bacteria. A total of 8 endophytic bacteria were isolated from the root, stem, and leaves of radish (Raphanus sativus). The antagonistic activity of these bacteria against the 2 isolated plant pathogenic fungi was determined in vitro. Two out of eight bacteria showed more than 50% inhibitory activity against one fungus, were further characterized using the 16s rRNA sequencing method. On the basis of the phylogenetic tree of the 16s rRNA method, the endophytic bacterial samples were identified as Tonsilliphilus suis  and Exiguobacterium aurantiacum against plant pathogenic Aspergillus flavus  isolated from Raphanus sativus, which makes them highly suitable as an alternative for chemical fertilizers to provide resistance to plant pathogenic fungi. The cell wall degrading activities such as protease activity, amylase activity, and plant growth-promoting properties such as Hydrogen cyanide (HCN), Indole acetic acid (IAA), ammonia production of these endophytic bacteria were evaluated. The results show that T. suis  is the most effective strain for radish growth development.

scholarly journals Isolation and characterization of plant growth-promoting endophytic bacteria Bacillus stratosphericus LW-03 from Lilium wardii

3 Biotech ◽  
2020 ◽  
Vol 10 (7) ◽  
Author(s):  
Mohammad Sayyar Khan ◽  
Junlian Gao ◽  
Mingfang Zhang ◽  
Xuqing Chen ◽  
The Su Moe ◽  
...  
Keyword(s):  
Plant Growth ◽  
Endophytic Bacteria ◽  
Isolation And Characterization ◽  
Plant Growth Promoting ◽  
Growth Promoting

scholarly journals Endophytic Actinomycetes from Tea Plants (Camellia sinensis): Isolation, Abundance, Antimicrobial, and Plant-Growth-Promoting Activities

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Wenna Shan ◽  
Ying Zhou ◽  
Huihui Liu ◽  
Xiaomin Yu
Keyword(s):  
Plant Growth ◽  
Camellia Sinensis ◽  
Bioactive Metabolites ◽  
Endophytic Actinomycetes ◽  
16S Rna ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Abundance And Diversity ◽  
Tea Plants ◽  
Promising Source

Endophytic actinomycetes are a promising source of novel metabolites with diverse biological activities. Tea plants (Camellia sinensis) produce arsenals of phytochemicals, which are linked to a number of medicinal and nutritional properties. However, a systematic investigation into the abundance and diversity of cultivated actinomycetes residing in tea plants has not been performed. In this study, a total of 46 actinobacteria were recovered from leaf, stem, and root samples of 15 tea cultivars collected in Fujian province, China. Their abundance and diversity were shown to be influenced by both the genotypes and tissue types of tea plants. Based on 16S RNA sequence analysis, these isolates were taxonomically grouped into 11 families and 13 genera, includingStreptomyces,Actinomadura,Kribbella,Nocardia,Kytococcus,Leifsonia,Microbacterium,Micromonospora,Mobilicoccus,Mycobacterium,Nocardiopsis,Piscicoccus, andPseudonocardia. The genusStreptomyceswas most prevalent whereas rare genera,MobilicoccusandPiscicoccus, were reported for the first time to occur as plant endophytes. PCR screening of polyketide synthase genes (PKS-I and PKS-II) and nonribosomal peptide synthetase genes (NRPS), along with antimicrobial assays against a set of bacterial and fungal pathogens, showed that endophytic actinomycetes associated with tea plants have a high potential for producing antimicrobial metabolites. Furthermore, indole acetic acid (IAA) production and 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase activities were recorded in 93.5% and 21.7% of all isolates, respectively. Overall, these results indicate that endophytic actinomycetes from tea plants represent a valuable source of bioactive metabolites with antibacterial, antifungal, and plant-growth-promoting properties.

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